These will probably hit 20-30% off shortly due to sales. I was in the store and tried this one the other day. I was quite impressed.
I have been very happy with these two:White:http://custom.luxire.com/products/grandi_calliope_b_00045_00501_fine_twill_whiteLight Blue:http://custom.luxire.com/products/grandi_tenerife_07841_0a187As a disclaimer, I tend to like slightly heavier and less wrinkle-prone fabrics. Not a big fan of broadcloth.
What is your budget range? Those shoes look comfortable, but they will not win you any style points, no matter what you pair them with. If you are wearing a peacoat, I am going to assume it is reasonably cold outside and I would go with a plain toe dark brown boot.
Pretty much any shoe beyond sneakers or boat shoes looks foolish with shorts.
Ebay. It is the best place to hunt for suits (in my opinion). Buy something quality off Ebay at a deep discount then take it to your tailor. As long as you know your measurements and get the shoulders/chest right, the tailor can usually fix everything else.
Can you comment on sizing differences between the marlow and the Peal and Co? It seems like the Marlow is wider, but I would be curious by how much. Also, you note the heel in the marlow is longer, but can you tell me/us which you feel is "snugger" and gives you a more solid heel lock?